Vacuum Suction Unit Guide Vane Inlet Angle Optimization
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Solution Overview
Problem
Existing vacuum suction units experience significant flow loss and vortex formation due to suboptimal design of the guide vane inlet angle and air flow path, leading to reduced efficiency.
Innovation Solution
The vacuum suction unit optimizes the inlet angle of the guide vane and the shape of the air flow path by incorporating a motor bracket with a second flow path and a detachable flow guide, featuring a streamlined inner circumferential surface and strategically positioned guide vanes to minimize flow loss and prevent vortex formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the guide vane inlet angle and air flow path shape are not optimized, then the structure is simple, but flow loss increases and fan efficiency decreases
Solution Approach 1:
The patent applies parameter changes by optimizing the guide vane inlet angle to a specific range (10-25 degrees) and designing the air flow path with a streamlined shape. These parameter optimizations reduce flow loss and prevent vortex formation, achieving fan efficiency of 67% or more while maintaining practical structural simplicity.
2Productivity
If the guide vane inlet angle and air flow path shape are optimized, then fan efficiency increases, but design complexity increases
Solution Approach 1:
The patent achieves high fan efficiency (67% or more) by optimizing key parameters: the guide vane inlet angle is set to 10-25 degrees, and the air flow path is designed with a streamlined shape. These parameter changes improve airflow characteristics without requiring complex additional components.
3Ease of manufacture
If the air flow path has a non-streamlined shape, then manufacturing is easier, but vortex formation occurs and flow loss increases
Solution Approach 1:
The patent applies curvature principles by designing the air flow path with a streamlined shape that smoothly guides airflow. This curved, streamlined design prevents vortex formation and flow separation, reducing flow loss while remaining manufacturable using standard fabrication processes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances fan efficiency by reducing flow loss and preventing vortices, resulting in improved airflow and increased suction unit performance, with fan efficiency maximized at 67% when the inlet angle of the guide vane is between 10 to 25 degrees.
Implementation Method 1
an impeller connected to a motor by a rotating shaft and suctioning in air by rotating
Implementation Method 2
a guide vane which is formed on a side of the body portion and guides the air ejected by the impeller
Data Source
Figure 1
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AI summary
A vacuum suction unit (1) is provided. The vacuum suction unit (1) includes a cover (10), an impeller (20), a motor, a guide device (30) which includes a guide body (310) and a guide vane (330), a flow guide (50) which is disposed below the guide device (30) and guides the air guided by the guide device (30) toward the stator (80), and a motor housing (60) which accommodates the motor and includes an air outlet (602). Here, a guide surface (501) at least a part of which has a diameter reduced as getting downward is formed at a bottom surface of the flow guide (50), the guide vane (330) includes a first guide vane (331) which is provided on a side of the guide body (310) and guides the air ejected from the impeller (20), and an inlet angle (θ1) of the first guide vane (331) is within a range from 10 to 25 degrees.